I'll have to disagree the GAC was never a FOTL pass for our family. It was an FP, plain and simple. It allowed my DH which has issues with crowded lines an opportunity to wait in the FP line which was less crowded and faster moving. In all of the years using the GAC we never got immediate access to a ride. I'm not concerned with the DAS about waiting our turn, I am concerned about my DH being in a crowded area which he cannot exit and return if needed.
It was actually a FOTL pass at DLR. However, having an unlimited FP with GAC is still a significant difference than the one at a time approach of the DAS. And DAS users can still use FP. The fact that many say that still isn't good enough does give the impression that they want more than to bypass crowded lines but are otherwise willing to wait.